One film, "Dead to Rights," about Japan's 1937 invasion of the Chinese city of Nanjing, follows a group of Chinese who smuggle out photographs and help document the killing of tens of thousands of civilians, an event known as the Nanjing Massacre. During an interactive showing in southwestern China, an actor dressed as a soldier shouts at moviegoers, "The Japanese want to destroy our country and exterminate us! Will you let them?" The audience, shown in a social media video pumping their fists, shouts back, "We will not!"